Type-writing machine or other similar instrument.



PATBNTED DEC. 13, 1904.

T. GAHILL.

TYPE WRITING MACHINE OR OTHER SIMILAR INSTRUMENT.

APPLICATION FILED FEB. 28. 1901. RENEWED APR. 18, 190

N0 MODEL.

WW N w No. 777,651. PATENTED DEC. 13, 1904.

T. GAHILL.

TYPE WRITING MACHINE OR OTHER SIMILAR INSTRUMENT.

APPLIOATION FILED FEB. 28. 1901. RENEWED APRJB, 1904.

. NQMODEL. 6SEEETSBHBET 2 iig/ .92 280' W No. 777,651. PATENTEDDEC. 13,1904. T. GAHILL.

TYPE WRITING MACHINE OR OTHER SIMILAR INSTRUMENT.

APPLICATION FILED FEB. 28. 1901. RENEWED APR.18, 1904.

N0 MODEL. 6 sums-sum a.

Q Q 4 g" 242 I l .2 Q

No. 777,651. PATENT ED DEC. 13, 1904. T. UAHILL.

TYPE WRITING MACHINE OR OTHER SIMILAR INSTRUMENT APPLICATION FILF-Dr1113. 28. 1901. RENEWED APE. 1a, 1904.

N0 MODEL. 6 EiHEETS-SHBET 4.

2 2'59 ("S g/11011001100111? i "I No. 777,661. PATENTBD DEC. 13, 1904.1". GAHILL.

TYPE WRITING MACHINE QR OTHER SIMILAR INSTRUMENT.

APPLIGATION FILED FEB. 28-. 1901. RENEWED APR. 18, 1904. N0 MODEL. v ssrwm-s smm 5.

NITED' STATES Patented December 13, 1904.

PATENT OFFICE.

THADDEUS 'CAHILILOF NEW YORK, N. Y.,--ASSIGNOR TO ELLIS SPEAR, JOHN T.SCHAAFF, F. HILTON JACKSON, AND JOSEPH J. DARLINGTON,

TRUSTEES.

TYPE-WRITING MACHINE on OTHER SIMILAR INSTRUMENT.

SBECIFICATION forming part of Letters Patent No. 777,651. dated.December 13, 1904.

Application filed February 28, 1901. Renewed April 18, 1904. Serial No.203,806. (No model.)

1' all whom it may concern:

Be it known that l, THADDEUS CAHILL, a citizen of the United States, anda resident of the city, county, and State of New York, temporarilyresiding at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in Type-VVriting Machines or otherSimilar Instruments, of Whichthe followingis a specification.

lin Letters Patent of the United States N 0. 657,478, dated September 4,1900, is illustratedv a form of type writing machine haying a keyboardconsisting of a few keys only arranged to be operated conveniently bythe right hand of the operator, whereby the operator is enabled with onehand only and without looking at the keys at all to write rapidly andeasily.

in another pending application of mine of even date herewith, Serial No.M9266, is de scribed another form of machine similar in general to thatillustratedin Letters Patent above mentioned, but having certainimportant improvements in detail.

Both of the machines above mentioned are constructed to be operated bythe power of the electric current.

T he machine illustrated in the accompanying drawings is in generalsimilar to that illustrated in the Letters Patent before mentioned, N 0.657,478, dated September 4:, 1900, and (except in respect of thenatureof the motor mechanism) it is exactly similar to that illustratedin detail and fully described in my pending application before mentionedof even date; but the machine illustrated in the ac coinpanying drawingsdiffers from the ma chines illustrated in Letters Patent above mentionedand the pen.dingapplication above mentioned in that it is constructed tobe operated by pneumatic power. A brief description therefore willsuiiice.

in the-accompanyingdrawings, Figure 1 is a sectional View, partly inelevation, in a plane parallel with the length of one of the keys of themachine. Fig. 2 is a horizontal section on the line 2 2, Fig. 1. Fig. 3is a horizontal section on the line 3 3. Fig. l.

Fig. 45 is a detail plan view of the center ring or fulcrum-ring withthe cap-ring in place, a portion of said cap-ring being broken away toshow the milled slots in fi1lcrum-ringancl the annular wire upon whichthe radial levers are fulcrumed. Fig. 5 is-a sectional. view on the line5 5, Fig. 4. Fig. 6 is a plan view of the pin-carrier with its link andreturning spring. Fig. 7 is an elevation of the same. Fig. 8 is aperspective view illustrating the stop by which the extreme movements ofthe shafting pin-carrier are limited. Fig. 9 is a plan View of the,fulcrum-ring, showing the radial levers in position, the cap-ring beingremoved. Fig. 10 is a plan view of, the group-controlling levers. Fig.11 is a detail side elevation of the same. Fig.1.; is a diagrammaticview illustrating the arrangement of the electric circuit.

Similar reference-numerals refer to similar parts in all the drawings.

Of the Width) f)b777.13.+-Tl16 main frame corn 7 sists, essentially of(ale bed-plate 24-0, (6) a top plate 2&1, (a) a, center ring orfulcrum-- ring 2&3, ((2) side standards 242 242, bolted to the bed-plateand serving to support the inicrum-ring 243, the gl'oii rconti'ollinglevers, the bell-crank levers, the motovframe, the circuit-closingframe, the I'eleasingi'i'ame, the pin-carrier driving-frame, and variousother parts hereinafter described, and (a) four columns 242 i 2% 24:4245 that rise from the ful crum-ring 243 to support the top plate 241.

(Zf'tlie t me-Lars and the meansfor contra Zing themr ti 6 are thetype-bars, fulcrurned i by means of hangers 7 7, screwed fast to thehanger-ring 8. which are set in milled slots 251 251 in the fulcrum-ring243 and are fulcrumed by means of a circular or segmental wire 252, heldin place by means of a cap-ring 253, which has slots milled in it tocorrespond with the slots 9 in the fulcrum-ringQ iS, to which it isattached by suitable screws. Each of the radial levers 250 250corresponds to-one of the type-bars 6 6 and is connected with the shortarm of such t; pe-bar by means of a connecting-nut 64 and link 65.

250 250 are the radial levers 5 Underneath the inner ends of the radialleve'rs 250 250 are the pins 254 254, (one pin to every four radiallevers, as the machine illustrated in the drawings isconstructed, thoughthe' number of. radial levers in a group and controlled by a single pinmay of course be altered, if desired,) mounted in the oscillatingpin-carrier 255 and held in their normal positions (shown in Fig. 7) bylight ex pansive springs 256 256, which bear upon collars 257 257,attached to the pins 254 254,

' on the rods 265 265. Said rods are supported by the standards 242 242,said standards being milled to produce slots to receive the severalgroup-controlling levers aforesaid. The proximate ends of thegroup-controlling levers 264 264 are made segmental, as illustrated inFigs. 2 and 10, so that however the pin-carrier may be oscillated orvibrated within the limits of its movement each of the pins 254 254always lies over the corresponding group-controlling lever 264.

--movement receiving arms.

Movement-receiving arms 266 266 are pivoted to the group-controllinglevers 264 264. An oscillating frame 27 O underlies the said Said frameis mounted by means of the arm.271 of the rockshaft '27 2 and thebridle-lever 273, to both of which it is pin-jointed. To the-other arm274 of the rock-shaft 272 the pneumatic power device 350 is connected-Said power device serves when a key is depressed to give movement to theoscillating frame 270 aforesaid,

and thereby to whatever one of the group controlling levers 264 264 mayhave its movement-receiving arm 266 266 overlying said frame. A movementreceiving arm 267, hinged to one of the group-controlling levers 264,normally overlies the motor-frame 270. while all the othermovement-receiving arms 266 266 lie normally out of the path of movementof said frame. We have seen that each of the group-controlling levers264 264, with the corresponcling pin 254, controls a different group ofthe radial levers 250 and the type-bars 6 6. The question'then of whattype-bar shall be impelled when the oscillating frame 270 strikes updepends upon (0)) what one of the groupcontrolling levers 264 264 hasits'movementreceiving arm in the path of movement of the motor-frame2'50 and (5) what position the oscillating pin-carrier 255 occupies,whether its normal position or some one of the posi- .the depressing ofthe keys 280 281 282.

To control the nine movement-receiving arms 266 266 and thegroup-controlling levers 264 264, with-which they are connected, thereare nine keys 283 283, eachof which serves, as we shall soon see, whendepressed to swing the movement-receiving arm 266, connected with thegroup-controlling lever 264, that corframe 270 to receive movementtherefrom, and the three keys 280 281 282 serve to oscillate or vibratethe pin-carrier 255, into the different positions required to connecteach of the group-controlling levers 264 264 aforesaid with thedifferent radial levers 250 250 of the group to which it corresponds.

Of the keyboard. Let us now consider the they actuate. As to thearrangement of the keys, see particularly Fig. 1. The keys 280 281 282,controlling the pin-carrier 255, are designed to be operated ordinarilyand prop- 283, corresponding to and controlling the differentgroup-controlling levers 264 264, are designed to be regularly andproperly operated by the fingers, excluding the thumb. The space-key 284is designed to be operated the keys 283.v I I overlying the keys 280 281282 283 283 283 and the space-key 284 is a set of key-corresponding keyactuated levers (which for greater convenience and to distinguish themfrom the key-levers we shall sometimes herein after term key-actuated.levers or key-corresponding levers) 285, 286,and 287,288, 288, 288, and290. These levers are fulcrumed in the support 292 292. Said support orarm is milled to receive the key-actuated leversaforesaid and also toreceive the normal frame 268. It serves also as a stop to limit theupward movement of the keys, and it is attached by screws 293 293 tolugs 294 294, that rise from the bed-plate. To the rear end of each ofthe key-actuated levers 285, 286,287,

arm or latch 44, which is held by a contractile spring 46 normally incontact with a steel exand connected by a link 31 with the arm 67responds to such key, over the reciprocating arrangement of the keys andthe parts which 7 by the ring-finger, which also operates one of,

front by means of the rod 291, which is'set intions into which it ismoved, respectively, by

erly by the thumb, while the nine keys 283 1 288, 288, 288, and 290 ishinged a releasing tension 43, attached tothe rear end of the corresponding key-lever- The latches 44 aforeof the rock-shaft 272, Fig.3,) strikes the latch their vertical arms connected by links 279 279 gwith the movement-receiving arms 266 266,

serve to connect the key-actuated levers 288 288 288 with themovement-receiving arms 266 266, pivoted to the correspondinggroupcontrolling levers 284 264, so that each of the keys 283 283 whendepressed lifts, through the latch 44, the correspondinglreyactuatedlever 288, which serves (c) to swing, through its hell 3 crank 277 andlink 279, the movement-receiving. arm 266, connected with thecorrespond' ing group'controlling. lever 264 over theoscillatinginotor-frame 270 to receive movement therefrom, (b) to Iii-ftthe normal frame 268,

, which is centered upon the same rod 291, which sta serves as a fulcrumfor the levers 285, 286, 287 288, 288, 288, and 290 and which acts onone of the bell-cranks 277 aforesaid and through said bell-crank and thelink 27 9, connected therewith, swings the normal movement-receiving arm267 oil from over the motord'rame 270, and tolift the circuit-closingframe 20,

- centered'at 21 and having an arm 22 carrying the battery-connectedscrew 24, furnished with a platinum point to make contact with a similarplatinum point in the spring 26, (see Fig. 12,) thereby closing thecircuit through the electromagnet 370, so that its core 374, becomingmagnetized, attracts itsarmatu re 375, which thereupon gives'movement tothe valvestem 376 to the valves 351 and 3552, thereby bringing thepneumatic motor-device 350 into action to operate the motor-frame 270,thus givin movement to whatever one or the move rne-nt-receiving arms266 overlies it and to the grouncontrolling lever 264, to which saidmoveinenoreceivingarm. is pivoted, and to the pin 254, overlying saidgroup-controlling lever 7 Said pi n in turn gives movement to what everone oi the radial levers 250 250 it, underlies, and the radial leverthus moved gives movement, through the link65, to the correspondingtype-bar 6, throwing the. type car-- ried thereby toward theprinting-center, so that it prints.

As the type-bar approaches the printingpoint'the releasing-frame 30(centered at 269,

and connected by a link 31 with the arm 275 of the magnet-actuatedrock-shaft-272Ystrilies1 the latch 44, moving itofi' of the end piece43,

attached to the corresponding keydever, and thereupon the key'sctiiatedlever returns to its normal position, releasing the various partscontrolled by it and, among others,lrcleasing the circuit-closing frame20, which returning to its normal position breaks the circuit of themagnet aforesaid, whe reupon the a rmatu re 37 5 returns to its normalposition under the influence of the contractile returning-spring 377.The valves 351 352 return to their normal positions, permitting the windto escape from the pneumatic 350, which, with the motor-frame 27 0, isreturned to its normal position by the contractile returning-spring 379,releasing the movement-receiving arm 266, group-controlling lever 264,pin 254, radial lever 250, and type-bar 6, all oi which immediatelyreturn to their normal positions, being assisted thereto by suitablesprings, some of which are omitted from the drawings. The return of allof the parts to their normal positions takes place in a very smallfraction of a second, and the operator cannot depress another key orkeys to print-another letter without having to wait to release the keyor keys ifirst depressed.

Each of the key-levers 283 283 283 (which from the fact that they aredesigned to be normally and regularly operated by the tinthurnb we mayproperly term finger-keys or finger key levers) serves when do pressedto cause someone of the type-bars of the group corresponding-to it to beactuated by the motor-frame 27 0, and if no one of the gers of the handas distinguished from the p ,keys 280 281 282 (which from the fact thatthey are designed to be normally and regularly depressed by the thumb wemay call fthumb-lceys or tl'lumb-key levers) is at bars of the group isactuated whose radial lever 250 overlies the corresponding pin 254 whenthe pin carrier 255 is'in its normal position, with the stop258 attachedto it held in the same time depressed that one of the typeo contact withthe step 259 of the support 260 by the contractile spring 261. The keys280,

7281,- and 282 "serve to oscillate the pin-carrier 255, and. thereby tocontrol what one of the nuts,) which strike the stops 309 302,5Fig. 2,

attached-to the rear ends of thelreymctuated levers 285 286."- "lilachof the vpins 254 254,.it' will be observed, controls a group of four ofthe radial levers 250 250 and type-bars 6 6. Each pin, as before said,in all itsdifierent positions overlies the correspondinggroupcontrollinglever 264. Eachlpin normally underlies the first radiallever 250 of the group of radial levers controlled by it, and it is os-cillated to iiiiderlic the second, third, and! fourth radial levers ofits groups, respectively, by depressing the keys 280, 280, and282,respcctivcly.

When the connection between the thumbkey 280, 281, or 282 is depressedand the corresponding key-actuated lever 285, 286, or 287 is temporarilybroken by the motor-impelled releasing-frame 3O acting upon the latch44, corresponding to the key depressed, to free said latch, thepin-carrier 255 and the parts connected therewith are returned by thecontractile spring 261 to their normal positions, with the step 258,carried by the pincarrier 255, resting against the stop 259 ofthesupport 260.

- The pin-carrier 255 is mounted upon an axle 262, set in the cap-ring253, on which axle it is held by the collar 263 and a set-screw.

hen one of the finger-keys is depressed simultaneously with one of thethumb-keys, it is important that the thumb-key which oscillates thepin-carrier 255 should throw said pin-carrier into the required positionbefore the circuit of the valve-controlling magnet 370 is closed; for ifthe circuit of said magnet be closed before the pin-carrier has assumedthe.

proper position a wrong letter is liable to be printed or otherdifiiculties to result. To

prevent, then, the premature closing of the tact-screw 310, carried bythe arm 307 of the pincarrierdriving rock-shaft 300, Fig. 12, andnormally making contact with he contact-spring 311 (which is adjustableby the screw 312) when the p n-carrier occupies its normal position, butbreaking contact with said spring 311 so soon as said pin-carrier movesfrom its normal position, and (6) a thumlnkey-operatedcircuit-controllingframe having a sleeve 313 journaled "on the shaft ofthe circuitfclosing frame 20, with forward-extending arms 31% anda'front part 315 overlying the thumb-key operated levers 285, 286,

and .287,- so" as to be operated by said levers, and having slots 316316 out into it overlying those of the levers 288 288, which, but forsuch slots, would operate said frame. Said frame has also a dependingarm 317, carrying a contact-screw 318, insulated from said arm,adjustable by a lock-nut and havinga platinum point, which when any ofthe keys 280 281 282 is depressed makes contact as such key approachesthe limit of its depression with another platinum point in thecontact-spring 319. The effect of this arrangement, it will be observed,is such that the circuit-closing frame 20 cannot complete the circuitwhile the pin-carrier is taking position, but completes the circuit ifthe pin-carrier is being the lug or hori -ontiil 'e and thence, if thesaid switch be closed, to the? contact-point 223, thence to the pivot 71of the rheostat-arm 70, from which it flows to the different sections ofthe rheostat according to the position of the handle 72 and arm 70,whether said arm makes contact with one or another of the contact-points7 3, and from said rheostat the current flows, if the pin-carrier 255 bein its normal position, to the spring 311 and thence to thecontact-screw 310 in the arm 307, which normally makes contact with thesaid spring 311, and from said screw 310 the current iiows to thecontact-screw 24, carried 0 and insulated fromthe arm 22 of thecircuitclosing frame 20, and from said screw 2 L (1f the circuit-closingfrmflne 20 be oscillated from its normal position by the depressing of akey) to the contact-spring 26 and from saidcontactspring 26 to andthrough the convolutions of the coil 1 5 of the valve-controlling magnet370 and thence back to the negative pole of the battery 236; but if anyof tile thumb-keys be depressed the connection between the screw 31G andthe contact-spring 311 is at once broken, so that the current instead offlowing by the path before described from the rheostatto thecontact-screw 24 flows from'said rheostat to the screw 318, carriedhy'and insulated from the arm 317 of the thumb-keyoperatedcircuit-controlling frame, and thence to the spring 319, with which thescrew 318 makes connection as the thumb-key which is being depressedreaches the limit of its move- By means of the switch 220, it will beob-.

served, the machine can be connected with or disconnected from thebattery 236 or other source of current.

By means of the rheostat illustrated in Fig.

.12 the resistance of" nhe circuit can be varied not only to compensatefor changes in voltage or in resistance, but; also to adjust therapidity of operation of the parts. I

Having thus given a general description of the whole mechanism, let usexamine more at length some of the details of construction of the motormechanism.

' The wind-chest 356 is formed by means of a hollow cylinder 321,.screwed down upon nsion 32 2 of the fulraivechest 354: is

crum-plete while c formed by a casting 373, circular in outline, whichis screwed up against said extension 372 of the fulcrum-plate 243. Thecore 374 of the-magnet 370 is screwed fast to the interior top wall ofthe cylinder 371, as illustrated in the drawings, while its armature 375, receives the screw-threaded end of the valve-stem 376, (madeadjustable by means of a lock-nut,) on which the valve 351, covering theport between the Wind-chest and val vechest, and the valve 352, coveringthe port between the valve-chest and the external atmosphere, are set.In the normal condition of things gravitation and the force of thecontractile returning-spring 377 hold the armature nd valve-stem in sucha position that the valve 351 closes its port While the valve 352uncovers its port, the result of which of course is that the pneumatic350, which is connected by the link 37 8 .with the front extending arm27 1 of the motor-frame, is held collapsed by the weight of said frameand the force of the contractile spring 379; but when by the action ofthe circuit-closing mechanism upon the depressing of the key, ashereinbefore described, (see particularly Fig. '12,) thecircuit isclosed the magnet 371, becoming energized, attracts its armature,thereby.

giving movement to the valves 351 352, opening the port between thewind-chest and the valve-chest, and closing the port between the-va'lve-chest and the external atmosphere, so that the wind enters thepneumatic 350, ex-

panding it and giving movement to the arm 27 1, rock-shaft 272, andmotor-frame 270, thus giving movement to whatever one of themovement-receiving arms 266 or 267 overlies said frame and to thegroup-controlling lever 264, movement-transmitting pin 254, radial lever250, link 65, and type-bar 6 and also to the releasing-frame 30 and thespacing mechanism, just as the magnet 370 does in the device illustratedin figure already described. When the releasing-frame thus actuatedknocks the latch 44 oil of the key extension 43, the key-correspondinglever operated by: the key depressed with the circuit-controllingrnechanismoperated by said key through said keyfcorresponding leverreturns to its nor-- mal position in advance of the releaseoi the key,breaking the circuit of the magnet 370, whereupon its armature 375 withthe valves 351 and 352 connected with it return under the influence ofgravitation and of the contached to it a lug 324, which is connected at.

325 with one end of the link 326, whose other end is connected with theshort arm of,the shifting lever 120, so that said key when de pressedshifts the short arm of the shifting lever 120, so that said key whendepressed shifts the platen from its lower-case to its upper-caseposition. A contractile spring 327 serves to hold the shift-lever 120 inits normal position and to return said shift-lever and platen to theirnormal positions when the shift-key 320 is released. A

The carriage, the ribbon mechanism, the spacing mechanism, and othersimilar details of construction, as they form no part of my presentinvention, require no further description.

Instead of placing the pneumatic power device 350 in the positionillustrated in the drawings it might be placed in some other convenientposition--as, for-example, in thebottom of the machine or in the tablewith which the machine is connected, so as to be out of view. In likemanner the valve-controlling electromagnet 370, with the valvescontrolled by it, may be placed in any other suitable positionas, forexample, in the base of the machine or to one side 'otit or in the tablewith which the machine may be connected.

Instead of using a power device of bellows form, as illustrated in thedrawings, a cylinder and piston may be used instead.

The necessary wind may be supplied to the wind-chest 356 in any suitablemanner.

The devices which 1 have figured in the drawings are shown inillustration of myinvention; but numerous variations and modificationsmay be made without departing from certain essential features,combinations, or subcombinations set'forth in the statement'of claim atthe end hereof.

I do not claim in this application anything that is claimed in any ofother'pcnding applications, and in particular I do" not claim in thisapplication any part of the subject matter of my other-pendingapplications Se- Trial No. 43,283, filed January 14, 1901, and

Serial Nos. 49,265 and 49,266,1iled February ICC 28, 1901; but there arecertainfeaturesof construction'for example,,those' involving the use ofa device for preventing the motor from acting while the pin-carrier orits equivalent is being positioned or including thecombina- 'tion ofsuch a device with the motor, the keys, f

I 25 i alike in this application and in the application the pin-carrier,or other parts-that are shown before mentioned, Serial No.49,266, andwhich are claimed in this application in combination with certain.features or things-as, for example, the pneumatic motor hereindisclosed and that are not disclosed in the other -appli cationlastmentioned, while the broader claims for subject-matter that isdisclosed in said ap' plication Serial No. 49,266 (and important partsof which are also of necessity disclosed in this application) have beeninserted in said application Serial No. 49,266, and which, being claimedin that application, are not claimed in this. Somewhat similar remarksapply to application Serial No. 49,265 in so far as the pneumatic motordevice and the common vibratory frame combined with the keys andtypebars are concerned, the broader claims for which are inserted inSerial No. 49,265; but I wish full protection for the whole of myinvention and for each and every part thereof, whether by means of thispresent application or by means of the applications before mentioned,Serial Nos. 49,265 and 49,266, and

which are of even date with the original ap' plication, Serial No.49,267, of which this application is a renewal and continuation.

What, therefore, I claim as of my own invention, and desire to secure byLetters Patentupon this present application, is-

1. In a type-writing machine and in combination, (a) type-bars; (b) apneumatic motor device for operating said type-bars; (a) a valve,controlling said motor device; ((1) an electromagnet, controlling saidvalve; and (e) one or more keys at the keyboard, controlling saidelectromagnet.

2. In combination in a type-writing machine, (a) type-bars striking to acommon printing-center; (b) a pneumatic power device, common to aplurality of said type-bars for giving movement to said type-bars, eachas required; (0) keys, fewer in number than said type-bars, and meansoperated by said keys, whereby said type-bars are connected, each asrequired, with the motor device aforesaid, to receive movementtherefrom; and (ca) valve mechanism, also controlled by said keys,whereby when a key is depressed and the appropriate type-bar connectedwith the pneumatic power device aforesaid, said power device is broughtinto action to operate said type-bar.

3. In combination in a type-writing machined) ty pe-bars striking to acommon printing-center; (7)) a pneumatic power device, common to aplurality of said type-bars for giving movement to said typeebars, eachas required; (c) keys, fewer in number than said type-bars, and meansoperated by said keys, whereby said type-bars are connected, each asrequired, with the motor device aforesaid, to receive movementtherefrom; (d) a valve, whereby said power device is brought into actionto operate the type-bars; and (e) a key-controlled clectromagnetfor/actuating said valve.

4. In combination in a type-writing machine,(u) type-bars striking to acommon printing-ccnter; (/1) levers corresponding to said type-bars, andeach connected with the typebarto which it corresponds; (c)group-controlling devices, each serving to control adifi'crent group ofthe type-bar-corresponding levers and typebars aforesaid; ((Z) pneumaticpower mechanism for actuating said group-controlling devices, thereby toactuate the type-bars; and (0) keys atthe keyboard, controlling saidpneumatic power mechanism.

In combination in a type-writing machine, (a) type-bars striking to acommon printing-center; (b) levers corresponding to said type-bars, andeach connected with the typebar to which it corresponds; (0)group-controlling devices, each serving to control a different group ofthe typebar-corresponding levers and type-bars aforesaid; (d) pneumaticpower mechanism for actuating said group-controlling devices, thereby toactuate the type-bars; (e) valve mechanism for controlling saidpneumatic power mechanism; (f) electromagnetic means for actuating saidvalve mechanism; and (g) keys at the keyboard, controlling saidelectromagnetic means.

6. In combination in a typewriting machine, (a) type-bars striking to acommon printing-center; (7)) levers corresponding to said type-bars, andeach connected with the typebar to which it corresponds; (c)group-control ling devices, each serving to control a different group ofthe type-bar-corresponding levers and type-bars aforesaid; (cl)pneumatic power mechanism for actuating said group-controlling devices,thereby to actuate the type-bars; (e) movement-transmitting d vicesintermediate said group-controlling devices and the groups oftype-bar-corresponding leversoperated respectively by saidgroup-controlling devices; (f) a shifter, whereby saidmovement-transmitting devices are shifted as a set to bring each intooperative relation with the different typebar-corresponding levers ofthe group to which it corresponds, each type-barcorresponding lever asrequired; (g) keys at the keyboarcLcontrolling thepneumatic powermechanism aforesaid; and (h) one or more other keys at the keyboard,con-trolling, the shifter aforesaid.

7. In combination in a type-writing machine, (a) type-bars striking toacommon printing-center; (b) levers corresponding to said type-bars, andeach connected with the typebar to which it corresponds; (c)group-controlling devices, each serving to control a different group ofthe Wpe-bar-corresponding levers and type-bars aforesaid; (d) pneumaticpower mechanism for actuating said groupiicontrolling devices, therebyto actuate the Qtype-bar's; (a) movement-transmitting devicesintermediate said group-controlling devices and the group's 'oftype-bar-corresponding levers operated respectively by saidgroup-conrolling devices; (f) a shifter, whereby saidovement-transmitting devices are shifted as set to bring each intooperative relation with the different type-bar-corresponding levers ofthe group to which it corresponds, each typebar-corresponding lever asrequired; (9) keys at the keyboard, controlling the pneumatic powermechanism aforesaid; and (it) a device operated by saidshifter-controlling key or keys,- and acting to preventthe pneumaticpower mechanism aforesaid from operating; to impel a' type-bar while theshifter aforesaid is being positioned.

In combination in a type-writing machine,(a type-bars striking toacommon printing-center; (6) levers corresponding to said type-bars, andeach connected with .the typebar to which it corresponds; (c)group-controlling devices, each ferent-group of the levers and type-barsaforesaid; (a!) pneumatic power mechanism for actuating" saidgroupcontrolling devices, thereby to actuate the type-bars; (e)movement-transmitting devices controlling devices,

intermediate said group-controlling devices and the groups oftype-bar-corresponding levers operated respectively by saidgroup-controlling devices; (f) a shifter, whereby said devices areshifted as a set to bring each into operative relation with thedifferent type-bar-corresponding levers of the group to which itcorresponds, each typebari-corresponding lever as required; valvemechanism for controlling the pneumatic power mechanism aforesaid;(h)e1ectromagnetic meansfor actuating said valve mechanism; (ilkeys atthe keyboard controlli 11g said electromagnetic means; and (/0) one ormore other keys at the keyboard, controlling the shifter aforesaid;

In combination in a type-writing ma chine, (a) typebars striking to acommon printing-center; (& levers corresponding to said type-bars, andeach connected with the type-bar to which it corresponds; (a)groupcontrolling devices, each serving to control a different group-ofthe type-bar-correspondiup;

levers and type-bars aforesaid; (d) pneumatic,

power mechanism for actuating said groupthereby to actuate thetype-bars; (e) movement-transmitting devices intermediate saidgroup-controlling devices and the groups-of type-bar-corresponding" le--vers operated respectively by said group-controlling devices; (f) ashifter, whereby said movement-transmitting devices are shifted as a setto bring each into operative 'relation with the differenttype-bar-corresponding levers of serving to control adiftypebar-corresponding power device for actuating thegronp to which itcorresponds, each typebar-corresponding lever-as required; ((7) valvemechanism for cont olling the pneumatic power mechanism aforesaid; (/1)electromagnetic means for actuating said valve mechanism; (vi) keys-atthe keyboard electromagnetic means; (lit) one or more other keys at thekeyboard, controlling the shifter aforesaid; and (Z) a device operatedby said shifter-controlling key or keys and acting to prevent thepneumatic power mechanism aforesaid from operating to impel a type-barwhile the shifter aforesaid is being positioned.

10. In a type-writing machine, the combination with type-bars, strikingto a common printing-center, keys fewer in number than said typebars,and type-bar-seiecting mechanism operated by said keys, of a pneumaticpower device for actuatinga plurality of said type-bars.

11. In a type-writing machine, the combi nationwith type-bars, strikingto a common printing-center, keys fewer in number than said type-bars,and type-bar-selecting mechanism operated by said keys, of a pneumaticpower device for actuating a plurality of said type-bars; and akey-operated, electrically controlled valve mechanism for said pneumaticpower device.

controlling said i 12. In a type-writing machine, the combination withtypcbars, striking to a common planting-center, keys fewer 111 numberthan said'typebais, and type-bar-selecting mechby said keys, of apneumatic a plurality of said type-bars; anda key-operated,electricallycontrolled valve mechanism for said pneu matic power device,for actuating a plurality of said levers; valve mechanism forcontrolanism operated 'ling'said pneumatic power device; anelectromagnet for controlling said valve mechanism,

and circuitcontrolling means for said magnet; said circnitcontrollingmeans being operated by a plurality of keys at the keyboard.

In testimony'whereo'f I have hereunto set my hand, at Washington,

H. L. BIssnLLE,

MT" SMITH.

in the District of Columbia, this 28th day of February, 1901,

TOG

